silent

adjective [原级]（人）安静的，沉默的；沉默寡言的，不爱说话的；（事物）无声的，寂静的；（情感、行为等）不用言语表达的，默默的；只字不提的，不愿讲的；（电影）无声的；（字母）不发音的；（疾病或问题等）悄然的，无症状的

A silent movie has pictures usually accompanied by music but does not have the actors' voices or any other sounds. ^{(电影) 无声的}